Mobile terminal and power control method

Abstract

A mobile terminal includes: a tamper-detection circuit ( 17 ), an information processor ( 13 ) that is capable of executing a suspend function, a first battery ( 23 ) supplying power to the information processor ( 13 ) and the tamper-detection circuit ( 17 ), and a switch ( 27 ) that is provided on a power-source supply line ( 431 ) that connects the first battery ( 23 ) and the information processor ( 13 ) and the switch that is capable of switching between a state in which information processor ( 13 ) is connected to first battery ( 23 ) and a state in which information processor ( 13 ) is not connected to first battery ( 23 ).

What is claimed is: 
     
       1. A mobile terminal including a tamper-detection circuit, an information processor that is capable of executing a suspend function, a first battery supplying power to said information processor and said tamper-detection circuit, wherein the improvement comprises
 a switch provided in the power-source supply line that connects said first battery and said information processor and said switch being capable of switching between a state in which said information processor is connected to said first battery and a state in which said information processor is not connected to said first battery, 
 wherein said tamper-detection circuit, when power is supplied to the tamper-detection circuit, maintains resistance to tampering regardless of whether or not power is supplied to said information processor, 
 said switch is not provided in a power-source supply line that connects said first battery and said tamper-detection circuit, and 
 said switch is a mechanical switch that allows an operator to manually switch between ON and OFF, and that allows the operator to confirm a state whether or not said suspend function is activated. 
 
     
     
       2. The mobile terminal according to  claim 1 , further comprising:
 a second battery that is a back-up battery; and 
 a power-supply control unit that, when the battery voltage of said first battery is equal to or less than a predetermined voltage, both switches the source of power supply to said tamper-detection circuit from said first battery to said second battery and, when said first battery and said information processor are connected by way of said switch, halts the supply of power from said first battery to said information processor.